Nelson Mandela in critical condition

Children and their family hold candles and sing the song "Amazing Grace" to show their support at night outside the entrance to the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Wednesday, June 26, 2013. South Africans were torn on Wednesday between the desire not to lose a critically ill Nelson Mandela, who defined the aspirations of so many of his compatriots, and resignation that the beloved former prisoner and president is approaching the end of his life. (AP Photo/Ben Curtis)

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A woman prays with others for former South African President Nelson Mandela at the Presbyterian church, at the Nelson Mandela museum in Qunu, South Africa, Thursday, June 27, 2013. A daughter of Nelson Mandela says he is in very critical condition but is still opening his eyes and reacting to touch at the South African hospital where he is being treated. (AP Photo/Schalk van Zuydam)

AP

A woman weeps as she and others pray for former South African President Nelson Mandela at the Presbyterian church, at the Nelson Mandela museum in Qunu, South Africa, Thursday, June 27, 2013. A daughter of Nelson Mandela says he is in very critical condition but is still opening his eyes and reacting to touch at the South African hospital where he is being treated. (AP Photo/Schalk van Zuydam)

AP

A group of wellwishers run and sing past the entrance to the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo/Ben Curtis)

AP

Unidentified members of the family are swamped by the media after collecting flowers from wellwishers outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa, Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo/Themba Hadebe)

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Granddaughters Zaziwe Dlamini-Manaway, center, and Tukwini Mandela, center left, are swamped by the media after collecting flowers from wellwishers outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo/Themba Hadebe)

AP

Unidentified members of the family are swamped by the media after collecting flowers from wellwishers outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Thursday, June 27, 2013. President Jacob Zuma canceled a trip to Mozambique on Thursday in an indication of heightened concern about Mandela, whose health deteriorated last weekend. (AP Photo/Themba Hadebe)

AP

Children from Thanduxolo day care sing outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Wednesday, June 26, 2013. South Africa's president Jacob Zuma on Tuesday urged his compatriots to show their appreciation for Nelson Mandela, who is in critical condition in a hospital, by marking his 95th birthday next month with acts of goodness that honor the legacy of the anti-apartheid leader. (AP Photo/Themba Hadebe)

AP

A wellwisher Florah Nkosi prays outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Wednesday, June 26, 2013. South Africa's president Jacob Zuma on Tuesday urged his compatriots to show their appreciation for Nelson Mandela, who is in critical condition in a hospital, by marking his 95th birthday next month with acts of goodness that honor the legacy of the anti-apartheid leader. (AP Photo/Themba Hadebe)

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A wellwisher Florah Nkosi holds a bible as she prays outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Wednesday, June 26, 2013. South Africa's president Jacob Zuma on Tuesday urged his compatriots to show their appreciation for Nelson Mandela, who is in critical condition in a hospital, by marking his 95th birthday next month with acts of goodness that honor the legacy of the anti-apartheid leader. (AP Photo/Themba Hadebe)

AP

Wellwishers sing songs to the sound of trumpets and saxophones to show their support at night outside the entrance to the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Wednesday, June 26, 2013. South Africans were torn on Wednesday between the desire not to lose a critically ill Nelson Mandela, who defined the aspirations of so many of his compatriots, and resignation that the beloved former prisoner and president is approaching the end of his life. (AP Photo/Ben Curtis)

AP

An unidentified woman wearing earrings bearing the image of former South African President Nelson Mandela, outside the Mediclinic Heart Hospital where he is being treated in Pretoria, South Africa, Wednesday, June 26, 2013. South Africa's president Jacob Zuma on Tuesday urged his compatriots to show their appreciation for Nelson Mandela, who is in critical condition in a hospital, by marking his 95th birthday next month with acts of goodness that honor the legacy of the anti-apartheid leader. (AP Photo/Themba Hadebe)

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Visitors from the Nelson Mandela museum with children from the Eastern and Western Cape sing get well soon wishes to former South African president Nelson Mandela outside his home in Qunu, South Africa, Wednesday, June 26, 2013. A South African archbishop who visited Nelson Mandela in a hospital has offered a prayer in which he wishes for a "peaceful, perfect, end" for the former president and anti-apartheid leader. (AP Photo/Schalk van Zuydam)

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A print of Nelson Mandela and a get well card hang on the wall outside the Mediclinic Heart Hospital where former South African President Nelson Mandela is being treated in Pretoria, South Africa Wednesday, June 26, 2013. South Africa's president Jacob Zuma on Tuesday urged his compatriots to show their appreciation for Nelson Mandela, who is in critical condition in a hospital, by marking his 95th birthday next month with acts of goodness that honor the legacy of the anti-apartheid leader. (AP Photo/Themba Hadebe)

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An Indian artist Sudarshan Pattnaik gives finishing touches to a sand sculpture of former South African President Nelson Mandela with a message, at a beach in Puri, about 67 kilometers (42 miles) from the eastern Indian city of Bhubaneswar, India, Tuesday, June 25, 2013. South Africa's president Jacob Zuma on Tuesday urged his compatriots to show their appreciation for Mandela, affectionately known as Madiba, who is in critical condition in a hospital, by marking his 95th birthday next month with acts of goodness that honor the legacy of the anti-apartheid leader. (AP Photo/Biswaranjan Rout)

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A man checks the headline of a South African newspaper reading "Madiba Critical" in a Johannesburg shopping mall Monday June 24, 2013. Nelson Mandelaís condition in a Pretoria hospital remained critical for a second straight day Monday, said South Africaís president Jacob Zuma, who described the stricken anti-apartheid hero as being ìasleepî when he visited Mandela the previous evening.(AP Photo/Jerome Delay)

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Thabiso Boya, adds his get-well message on a poster for former South African President Nelson Mandela, at the Education Expo in Johannesburg, South Africa Thursday, June 20, 2013. Mandela remains in the hospital for the 13th day. The 94-year-old was hospitalized for a recurring lung infection. (AP Photo/Themba Hadebe)

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School children pray in the Regina Mundi church in Soweto township on the outskirt of Johannesburg, South Africa, Sunday June 16, 2013. Former South African president Nelson Mandela remained hospitalized for the ninth day with an occurring lung infection. (AP Photo/Jerome Delay)

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Woman sing inside the Mqhekezweni Methodist Church, were former South Africa president Nelson Mandela went to church as a child, in Mqhekezweni, South Africa, Sunday, June 16, 2013. South Africa's president says that Nelson Mandela is seeing sustained improvement from the recurring lung infection that is forcing him to spend a ninth day in the hospital. (AP Photo/Schalk van Zuydam)

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A print of Nelson Mandela and get well messages lay outside the home of the former President Mandela in Johannesburg, South Africa, Saturday, June 15, 2013. Mandela remains in the hospital for a seventh day. The 94-year-old was hospitalized on Saturday for a recurring lung infection. (AP Photo/Themba Hadebe)